111111111071 has 8 divisors (see below), whose sum is σ = 113481531840. Its totient is φ = 108740955168.

The previous prime is 111111111049. The next prime is 111111111091. The reversal of 111111111071 is 170111111111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111111111071 - 2²⁶ = 111044002207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111111091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 944465 + ... + 1055573.

It is an arithmetic number, because the mean of its divisors is an integer number (14185191480).

Almost surely, 2^111111111071 is an apocalyptic number.

111111111071 is a deficient number, since it is larger than the sum of its proper divisors (2370420769).

111111111071 is a wasteful number, since it uses less digits than its factorization.

111111111071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132433.

The product of its (nonzero) digits is 7, while the sum is 17.

Adding to 111111111071 its reverse (170111111111), we get a palindrome (281222222182).

The spelling of 111111111071 in words is "one hundred eleven billion, one hundred eleven million, one hundred eleven thousand, seventy-one".